Neuroscience

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SWITCHING SIDES These fMRI scans show the brain activity of a healthy person (left) and a stroke patient (right) while doing a language-related task. Having a stroke just before or after being born flips key language-processing areas from the left to the right side of the brain, a new study shows.

E. NEWPORT

FEELING OFFBEAT Briefly disrupting a brain region involved in planning movement with a magnetic pulse hinders a person’s ability to follow a rhythmic beat. (The black square in this heat map indicates the site of highest pulse stimulation.)

Jessica Ross/UC Merced

VANISHING ACT Globs of a protein linked to Alzheimer’s (red) dot a brain sample from a 10-month-old mouse (left). But these disease hallmarks largely vanish in a similar mouse that mostly lacks a particular brain enzyme.